Improvement in heels for knives for reapers and mowers



R. ALLSTATT-ER.

Heels for Knives for Eeapers and Mowers.

Patented Jan. 14,1873.

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*ttefit J Imam/entail" AM PHUTO-LITHOGRAPIIIO ca. m(ossams mace SsUNITED STATES ROBERT ALLSTATTER, OF HAMILTON, OHIO, ASSIGNOB TO LONG ANDALLSTATTER, OF SAME PLACE.

IMPROVEMENT IN HEELS FOR KNIVES FOR REAPERS AND MOWERS.

Specification forming part of Letters Patent No. 134,831, dated January14, 1873.

To all whom it may concern:

Be it known that I, ROBERT ALLSTATTER, of Hamilton, Butler county, Stateof Ohio, have invented a certain new and useful Im provement in theManufacture of Reaper and Mower Knives, of which the following is aspecification:

Nature and Objects of Invention.

' it shall form a steel bushing for the pin of the pitman, which steelmay be hardened for prolonged use. My invention further consists of acertain device by which the bent facing is preserved in place during theprocess of heating for welding.

Description of the Accompanying Drawing. Figure l is a perspective viewof the heel or pitmau attachment, the construction of which is thesubject of this invention. Fig. 2 is a perspective view of a rolled bar,which I especially prepare for the manufacture of this heel. Fig. 3 is aperspective view of the steel facing before it is bent. Fig. 4 is aperspective view of the steel facing after it is bent. Fig. 5 is a planof the heel attached to the knife. Fig. 6 is a crosssection of myimproved heel at the center of the hole for the attachment of the pin ofthe pitman.

General Description.

A is a reaper or mower knife of ordinary construction,and B the heel orpitman attachment of the same. To construct this heel, I first take abar of iron specially rolled for this use, similar to that shown in Fig.2, from which, if of the usual length for bariron, can be made a largenumber of heels. The bar consists of a base, I), and Webb, the junctionof the two strengthened by fillets b. The facing O of steel, which is toform the sides of the lug B, Fig. 1, is prepared, as

shown in Fig. 3, having a narrow neck, 0, designed to fit a notch, a,prepared in the bar, Fig. 2. The facing, when bent, fits snugly over therolled bar, as shown at Fig. 6, the neck 0 fitting into the notch a, andthe chamfered edges 0 fitting the fillets b. In this condition the partsare joined by welding the neck and notch device, preventing displacementduring the process of heating and welding. After this the bar is cut toproper length, and swaged down to the form shown in Fig. l. The hole B,when drilled, will be partly through iron, but mainly through steel,which steel forms the required steel bearing or bushing for the pin ofthe pitman which operates the knife. Heretofore the steel bearing hasbeen provided by driving a bush into the lug B larger than the holerequired, or by jumping an entire lug of steel upon a fiat bar. By thefirst method it is difficult to get steel of equal thickness all roundthe hole, and often the hole cuts into the iron through the steel bush,whereas, by my improved method, the steel extends the fullwidt-h of thelug.

By the jumpingon process the bar is very materially weakened by thegelling of it in the process of welding the steel upon it.

Claims.

1. A heel or pitman attachment for reaper and mower knives, consistingof a rolled ribbed iron bar of the required form with a steel facingwelded to it, for the purpose of providing a steel bushing for thepitman pin or journal without loss of strength in the heel,substantially as and specified.

2. A heel or pitmau attachment for reaper or mower knives, composed ofthe iron B B and the bifurcated steel facing Cl, which is welded to theiron, having a neck, 0, to enter a corresponding groove, a, in the lug Bof the iron, substantially as and for the purpose specified.

In testimony of which invention I hereunto set my hand.

ROBERT ALLSTATIER.

Witnesses FRANK MILLWARD, J. L. WARTMANN.

for the purpose

